Probably if Aimery directly worked for him rather than answering to Lex, Adrian would feel more concern over his trustworthiness. But as it lies, this is Lex's problem to deal with, so Adrian will make sure to lock up his office and his labs, but he's unlikely to get more involved than that unless he feels the situation is taking a personal toll on Lex.

Although the fact that it involves the elder Luthor may spur him to at least have a brief word with Aimery about being more careful who he associates with if he intends to remain employed.

"Then he'll find there's very little to learn from having Aimery do his errands. He's not allowed in the labs and I don't entrust either him or Miss Lockhart with sensitive materials of any sort. Beyond that, maybe it isn't such a bad thing to give your father something to feel uneasy about." Adrian isn't really into being underestimated. He much prefers to allow his competition to understand just exactly how bad an idea it is to challenge or provoke him.